void __delay(unsigned long cycles)
{
unsigned long long start = __vmgettime();
while ((__vmgettime() - start) < cycles)
cpu_relax();
}
void __udelay(unsigned long usecs)
{
unsigned long long start = __vmgettime();
unsigned long long finish = (pcycle_freq_mhz * usecs) - fudgefactor;
while ((__vmgettime() - start) < finish)
cpu_relax();
}
void __udelay(unsigned long usecs)
{
unsigned long long start = __vmgettime();
unsigned long long finish = (pcycle_freq_mhz * usecs) - fudgefactor;
while ((__vmgettime() - start) < finish)
cpu_relax(); /* not sure how this improves readability */
}
void __init setup_arch(char **cmdline_p)
{
char *p = &external_cmdline_buffer;
my_out("Hello from Hexagon Linux 1\n");
my_out("Hello from Hexagon Linux 2\n");
/*
* These will eventually be pulled in via either some hypervisor
* or devicetree description. Hardwiring for now.
*/
pcycle_freq_mhz = 600;
thread_freq_mhz = 100;
sleep_clk_freq = 32000;
my_out("600TEST 1: %llu\n", __vmgettime());
my_out("600TEST 2: %llu\n", __vmgettime());
//*(volatile uint32_t*)0xA900080C |= 0x20;
/*
* Set up event bindings to handle exceptions and interrupts.
*/
__vmsetvec(_K_VM_event_vector);
/*
* Simulator has a few differences from the hardware.
* For now, check uninitialized-but-mapped memory
* prior to invoking setup_arch_memory().
*/
if (*(int *)((unsigned long)_end + 8) == 0x1f1f1f1f)
on_simulator = 1;
else
on_simulator = 0;
if (p[0] != '\0')
strlcpy(boot_command_line, p, COMMAND_LINE_SIZE);
else
strlcpy(boot_command_line, default_command_line,
COMMAND_LINE_SIZE);
/*
* boot_command_line and the value set up by setup_arch
* are both picked up by the init code. If no reason to
* make them different, pass the same pointer back.
*/
strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
*cmdline_p = cmd_line;
parse_early_param();
my_out("setup_arch() 2\r\n");
setup_arch_memory();
my_out("setup_arch() 3\r\n");
#ifdef CONFIG_SMP
smp_start_cpus();
#endif
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
my_out("about to exit setup_arch()\r\n");
}
static cycle_t timer_get_cycles(struct clocksource *cs)
{
return (cycle_t) __vmgettime();
}
static u64 timer_get_cycles(struct clocksource *cs)
{
return (u64) __vmgettime();
}
